Numerical Analysis of Water drop on Silicone Rubber Insulator for High Voltage Power Transmission Line

In this paper, two cases have been investigated from the electric field and polarization density distribution point of view. The first case of investigation is by changing the contact angle of water drop on the clean silicone rubber insulator surface under applied electric stress. The second case of investigation is by changing the dielectric constant of the dust contamination of the hemispherical water drop on the insulator surface under the same applied high voltage electric stress. Both cases have been investigated by using finite element method based software in 2D space dimension. This software is used for numerical calculation of normalized electric field and polarization density distribution. Furthermore, the simulation results show that normalized electric field, normalized electric field enhancement ratio, polarization density, normalized polarization density intensification percentage has been increased with increasing contact angle and dust dielectric constant.